package com.OrderingSystem.controller.buyer;

import com.OrderingSystem.enums.ResultEnum;
import com.OrderingSystem.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.net.URLEncoder;

@Controller
@RequestMapping("/sell/wechat")
@Slf4j
public class WechatController {

    @Autowired
    WxMpService wxMpService;

    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl) {
        //1. 配置
        //2. 调用方法
        // 配置的是内网穿透地址
        String url = "http://sca464b6.natappfree.cc/sell/wechat/userInfo";

        /*
        https://open.weixin.qq.com/connect/oauth2/authorize?
        appid=wxb15e971d86e6fcad&
        redirect_uri=http%3A%2F%2Fee2a6e83.natappfree.cc%2Fsell%2Fwechat%2FuserInfo&
        response_type=code&
        scope=snsapi_base&
        state=http%3A%2F%2F127.0.0.1%3A8088%2F%23%2F#wechat_redirect
        * */

        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_BASE, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                           @RequestParam("state") String returnUrl) {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】{}", e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
        String openId = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:" + returnUrl + "?openid=" + openId;
    }
}